Electronic apparatus for sensing and indicating the vertical or horizontal position of a flat surface



FIG. 1 is a top view of the apparatus.

FIG. 2 is a bottom view of the apparatus.

FIG. 3 is a front view of the apparatus; and,

FIG. 4 is a rear view of the apparatus. 

The ornamental design for an electronic apparatus for sensing and indicating the vertical or horizontal position of a flat surface, as shown and described. 